OFT E85 tune and mileage....
 

Stock car other than TRD filter. I got 18 whole miles to the gallon of booze on the last tank, although the car is faithfully reporting almost 26 mpg. By doing the math, I've never gotten better than 25 on regular gas, either.

Some sacrifices must be made, I guess!

This is because oft uses the injector scaler to compensate for e85's fueling requirements. The ecu doesn't know that it's injecting more fuel, since requested fuel volume doesn't change. Normally with flex fuel you'd compensate requested volume against the ECA which allows the gas mileage calculation to function properly.

To be fair though, relying on the readout for fuel consumption is generally hopeless. It is fun to pretend it gets half decent mileage though.

im at 23mpg on e85, not too bad

just filled up after my first E85 tank. 1.5 gal of 93 was left. was light on the throttle for the first 50 or so. anyway i averaged about 22mpgs for the first tank

I'm turbod on e85 with ecutek and my mpg is about as accurate as it was stock. But I am getting 22 at best on the freeway. Goes to 3mpg while in boost. Oops.

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All stock except for a drop in filter ..on pump 93 octane I average about 24mpg and on e85 I get 20.8 lol...im never going back to 93 though the e85 power is amazing lol.

Yup, at 24mpg(actual, calculated by me) with e85 and oft tune

On a full tank of E85 I typically fill up every ~200-230 miles give or take how I have been driving on that tank. (I have filled up at only 150 miles driven before too lol) This is of course around the time when the 'gas' light icon shows up - so every ~11.2 gallons gives me ~200-230 driving miles.

last tank i was at 20.5 worth it

As a Jeep owner, those numbers don't scare me :party0030:

Does anyone know if the oft would work well with a flex fuel kit.

I.e, will it be able to adjust for ethanol content

Somebody will need to alter programming in the stock rom to hijack a sensor in order for the oft, brzedit, and EcuFlash tunes to get flex fuel. Ecutek already does this, but their prices are ridonk. Flexfuel really isn't worth it or necessary until you go fi.

I have not heard of anyone working on this yet.

Not only hijacking a sensor is needed, that can be done easily. The problem is being able to create a custom map. Hats off to Ecutek for creating them inside a tiny tiny blank portion of memory available on the stock ecu